Quitting drinking can only make your medical situation and life better. Also, I wouldn't beat myself up too much - I sure wouldn't consider you a "heavy drinker" at 2 to 3 glasses 4 to 5 times a week. That's actually a healthy level. (As someone who's been drinking at least 10 drinks a day, seven days a week, I know unhealthy.) But the risk of it escalating is always there, and if your Dr. says to quit, it would be prudent to do so. Best of luck with your health.